The sign was difficult to read. MSNBC/Twitterscreenshot A man standing behind Donald Trump at a Wednesday-night rally held an unusual protest sign.

The Republican presidential front-runner gave a stump speech before a packed Clemson University crowd in Pendleton, South Carolina. At various points in his speech, however, a sunglasses-clad man stood up with a sign declaring that "TRUMP LIKES HIS STEAK WELL DONE."

This was an apparent reference to a Tuesday report in The Telegraph, in which Trump was described ordering a well-done steak at a restaurant in Manchester, New Hampshire. The report caused a small firestorm of mockery on Twitter.